<template>
  <div>
    <div class="jsoneditor-vue" style="height: 100%"></div>
    <div class="jsoneditor-btns" v-if="showBtns !== false">
      <button
        class="json-save-btn"
        type="button"
        @click="onSave()"
        :disabled="error"
      >
        {{ locale[lang].save }}
      </button>
    </div>
  </div>
</template>

<script>
import './jsoneditor.css'
import JsonEditor from './jsoneditor'

export default {
  name: 'VueJsonEditor',
  // props: ['value', 'showBtns', 'mode', 'modes', 'lang'],
  props: {
    value: [String, Number, Object, Array],
    showBtns: [Boolean],
    expandedOnStart: {
      type: Boolean,
      default: false,
    },
    mode: {
      type: String,
      default: 'text',
    },
    modes: {
      type: Array,
      default() {
        return ['tree', 'code', 'form', 'text', 'view']
      },
    },
    lang: {
      type: String,
      default: 'ch',
    },
  },
  watch: {
    value: {
      immediate: true,
      async handler(val) {
        if (!this.internalChange) {
          await this.setEditor(val)

          this.error = false
          this.expandAll()
        }
      },
      deep: true,
    },
  },
  data() {
    return {
      editor: null,
      error: false,
      json: this.value,
      internalChange: false,
      expandedModes: ['tree', 'view', 'form'],
      locale: {
        it: {
          save: 'SALVA',
        },
        en: {
          save: 'SAVE',
        },
        zh: {
          save: '保存',
        },
      },
    }
  },
  mounted() {
    const self = this

    const options = {
      mode: this.mode,
      modes: this.modes, // allowed modes
      onChange() {
        try {
          const json = self.editor.get()
          self.json = json
          self.error = false
          self.$emit('json-change', json)
          self.internalChange = true
          self.$emit('input', json)
          self.$nextTick(() => {
            self.internalChange = false
          })
        } catch (e) {
          self.error = true
          self.$emit('has-error', e)
        }
      },
      onModeChange() {
        self.expandAll()
      },
    }

    this.editor = new JsonEditor(
      this.$el.querySelector('.jsoneditor-vue'),
      options,
      this.json
    )
  },
  methods: {
    expandAll() {
      if (
        this.expandedOnStart &&
        this.expandedModes.includes(this.editor.getMode())
      ) {
        this.editor.expandAll()
      }
    },

    onSave() {
      this.$emit('json-save', this.json)
    },

    async setEditor(value) {
      if (this.editor) this.editor.set(value)
    },
  },
}
</script>

<style scoped>
::v-deep .jsoneditor-poweredBy {
  display: none;
}
.ace_line_group {
  text-align: left;
}
.json-editor-container {
  display: flex;
  width: 100%;
}
.json-editor-container .tree-mode {
  width: 50%;
}
.json-editor-container .code-mode {
  flex-grow: 1;
}
.jsoneditor-btns {
  text-align: center;
  margin-top: 10px;
}
.jsoneditor-vue .jsoneditor-outer {
  min-height: 150px;
}
.jsoneditor-vue div.jsoneditor-tree {
  min-height: 350px;
}
.json-save-btn {
  background-color: #20a0ff;
  border: none;
  color: #fff;
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
}
.json-save-btn:focus {
  outline: none;
}
.json-save-btn[disabled] {
  background-color: #1d8ce0;
  cursor: not-allowed;
}
code {
  background-color: #f5f5f5;
}
</style>
